What is the EM4200 RFID Card: EM4200 Overview and Benefits

Table of Contents:

What is the EM4200 RFID Card?

Detailed Features of the EM4200 RFID Card

Key Characteristics of the EM4200 Card

Does the EM4200 Card Comply with International Standards?

Does the EM4200 Card Support Encryption?

What is the Reading Distance of the EM4200 Card?

Can the EM4200 Card Be Used on Metal Surfaces?

Compatibility with Other EM Series Cards

Comparison with Other RFID Cards

Application Scenarios of the EM4200 Card

How to Maintain the EM4200 Card?

Conclusion

What is the EM4200 RFID Card?

The EM4200 RFID card operates in the low-frequency (125 kHz) range. EM4200 is a low-frequency (LF), read-only RFID chip and an upgraded version of the EM4100, developed by EM Microelectronic, a Swiss company. The 125 kHz LF RFID technology is a stable, mature, and cost-effective identification solution. It offers strong penetration capability but with a short read/write distance, making the EM4200 particularly suitable for applications requiring close-range communication. The EM4200 uses the ISO 11785 standard protocol for data exchange, ensuring high compatibility and standardization across various devices and systems.

Detailed Features of the EM4200 RFID Card

Read range and performance

The read range of the EM4200 RFID card is a key metric for evaluating its practical usability and directly determines its applicable scenarios. Since it operates using low-frequency (LF) RFID technology, its read range is shorter compared to high-frequency (HF) and ultra-high-frequency (UHF) cards.

Short-range reading

Under typical conditions, the EM4200 card’s read range spans a few centimeters. The exact distance depends on environmental factors and the power of the reader/writer device, with an ideal reading distance generally between 5 to 10 centimeters.

Impact of environmental factors

Metallic objects, water sources, and electromagnetic interference in the environment can all affect signal transmission and reduce the read range. Especially near metal or humid environments, the stability and propagation of low-frequency signals are greatly affected, so these factors should be considered during actual deployment.

Variations in device performance

The power output and antenna design of different readers also significantly influence the reading effectiveness of the EM4200. High-power readers can typically extend the reading distance, while low-power devices limit it.

Durability and service life

The durability and lifespan of the EM4200 RFID card are crucial factors when selecting cards, particularly for use in harsh environments. The card operates on a contactless principle and is made from durable materials such as PVC and PET, ensuring a sturdy and robust structure.

Waterproof and dustproof capabilities

The EM4200 usually features some degree of water and dust resistance, making it suitable for humid or dusty conditions. However, its performance may degrade under extreme temperature conditions.

Physical damage resistance

Although the card's outer shell is relatively robust, prolonged impact and abrasion may affect the surface and its reading performance. In industrial environments, additional protective measures may be needed to enhance the card’s durability.

Service life

Since it does not rely on battery power, the EM4200 card has a relatively long service life and experiences almost no aging issues, making it highly suitable for long-term applications such as access control and asset tracking.

Data Storage and security features

Data storage and security form the foundation for the wide application of the EM4200 RFID card. The card uses a read-only storage mode, meaning users cannot modify the data once written, which enhances data security to some extent but also imposes certain limitations.

Storage capacity

The EM4200 holds 128 bits of memory, primarily used to store the unique identifier (UID) of the card. This makes it suitable for applications requiring stable and unchangeable identity information, such as identity verification, animal tracking, and access control systems.

Security and encryption limitations

Since the card data is not encrypted and uses low-frequency technology, it is vulnerable to copying and other attacks. The read-only property can prevent data tampering but cannot fully prevent cloning.

The EM4200 does not support strong encryption features and cannot meet high confidentiality requirements. For scenarios involving sensitive information transmission, it is recommended to implement additional encryption measures at the system level or incorporate hardware protection.

Security enhancement recommendations

Add encryption protocols in the reader device; use anti-cloning technology; consider replacing with high-frequency RFID cards; and improve overall system security through encrypted communication, two-factor authentication, and other advanced security methods.

Key Characteristics of the EM4200 Card

The EM4200 RFID card is typically made from PVC or PET materials, and its performance is primarily determined by the built-in EM4200 chip. The EM4200 is a CMOS-based integrated circuit designed for electronic read-only RFID transponders. It can directly replace EM4100/4102 and EM4005/4105 chips. The main features of this chip include:

Full compatibility with the communication protocols of EM4100/4102 and EM4005/4105.

Equipped with a 28-bit laser-programmed read-only memory (ROM), with 64-bit and 96-bit memory options also available.

Supports multiple data transmission rates and encoding schemes, including:

Manchester encoding with 32 or 64 RF clocks per bit;

Biphase encoding with 32 or 64 RF clocks per bit;

PSK modulation with 16 RF clocks per bit (subcarrier frequency is half of the RF frequency);

FSK2 modulation with 50 RF clocks per bit.

Several on-chip resonant capacitor options integrated (0pF, 75pF, or 250pF).

Operating frequency range from 100 to 150 kHz.

Built-in rectifier and voltage protection circuitry to ensure stable operation.

No need for additional external buffer capacitors.

Operates normally within a temperature range of -40°C to +85°C.

Very low power consumption while maintaining excellent performance.

Does the EM4200 RFID Card Comply with International Standards?

The EM4200 RFID card complies with the ISO 15693 international standard, and its product type is classified under ISO 15693.

This means it meets the basic requirements of the ISO 15693 standard, but it is not considered a high-security or highly interoperable international standard like ISO/IEC 14443 or advanced versions of ISO/IEC 15693.

Basic Information of the EM4200 Chip:

Frequency: 125 kHz (Low Frequency, LF)

Protocol Compatibility: The EM4200 does not fully comply with ISO standards, but is generally classified as a read-only type compatible with ISO 11784/11785, especially in applications like animal identification.

Chip Characteristics:

Read-only chip (no user data can be written);

Unique 64-bit ID;

No encryption or security mechanism;

Compatibility: Broadly compatible with most 125 kHz RFID readers, including those supporting EM4100 and EM4102 series.

If your application requires higher security and broader international compatibility (such as for hotels, transportation, or payment systems), consider the following alternatives:

MIFARE Classic / DESFire – compliant with ISO 14443

ICODE / Tag-it HF – compliant with ISO 15693

NTAG / Ultralight series – NFC-compatible

Does the EM4200 RFID Card Support Encryption?

EM4200 RFID Card Does Not Support Encryption

It is essentially a low-frequency, read-only ID card with the following characteristics:

No Encryption Mechanism:

The card uses a fixed ID code format. The card number is stored and transmitted in plaintext, and no key verification is required during read/write operations.

Basic Physical Parameters:

· Operating Frequency: 134.2 kHz (low frequency)

· Protocol Standard: ISO7814

· Data Storage: Only supports reading a unique ID number, capacity of 1024 bits

· Write/Erase Endurance: 100,000 cycles (though typically used as a read-only card in practice)

Typical Application Scenarios:

· Identity Recognition

· Access Control Cards (in low-security environments)

· Temporary Parking Cards

· Logistics Tags (for non-sensitive data)

What is the Reading Distance of the EM4200 RFID Card?

Typical Reading Distance of EM4200 RFID Cards: 1–10 cm

Core Parameters Affecting Reading Distance:

Standard Reading Range

Common Card Types: Standard EM4200 cards (e.g., access cards, key fobs) generally have a reading distance of 1–10 cm when used with standard RFID readers.

Typical Scenarios: For access control systems, the card typically needs to be held close to the reader (about 2–8 cm). In logistics tagging, the reading range is usually 1–3 cm.

Extended Range Versions

Some suppliers offer custom-designed tags with enhanced antenna design or increased tag size, achieving distances of 80–100 cm. However, this is for special-use cases and not part of standard configurations.

Technical Limitations

Low-Frequency Constraints: The EM4200 operates in the 125–134 kHz low-frequency band, which inherently limits its transmission distance (longer wavelength provides strong penetration but is suited only for near-field identification).

Compared to UHF Tags: Ultra-high frequency RFID (e.g., 860–960 MHz) can reach up to 10 meters, but the EM4200 cannot achieve such performance levels.

Factors Affecting Reading Distance:

Reader Power and Antenna Size

 – Higher power and larger antenna size result in greater reading distances

Card Antenna Design and Size

 – Smaller tags or key fobs usually have shorter reading ranges

Usage Environment

 – Metal interference, moisture, or shielding materials can significantly reduce the reading range

Reading Angle and Orientation

 – Optimal alignment between antennas improves reading distance

Can the EM4200 RFID Card Be Used on Metal Surfaces?

EM4200 RFID cards are not suitable for direct use on metal surfaces because metal interferes with and attenuates low-frequency signals, resulting in reduced reading distance or read failures.

If it is necessary to use them in metal environments, special designs with anti-metal shielding layers or additional isolation during installation are usually required to ensure stable and reliable signals. The solutions are as follows:

Solution 1: Add a ferrite magnetic shielding layer by embedding magnetic isolation material between the card and the metal surface to block metal eddy currents, achieving a signal recovery rate of over 80%.

Solution 2: Use a honeycomb-structured isolation substrate, employing foam or honeycomb layers to increase the distance between the antenna and the metal surface, raising the minimum working distance to 1–3 cm.

Solution 3: Customize anti-metal tags integrating a reflective layer and enhanced antenna for stable reading on industrial metal surfaces.

Comparison with Other RFID Cards

Here is a detailed comparison of EM4200 with other common EM series RFID chips (EM4100, EM4350, EM4450), covering technical specifications, functional features, and application perspectives:

How to Decide Whether to Choose the EM4200 RFID Card

Choosing whether to use the EM4200 RFID card mainly depends on your application scenario, performance requirements, and compatibility needs. Below are some key factors to help you determine if the EM4200 card is the right choice:

Suitable Scenarios for Choosing the EM4200 Card:

1. Low-Frequency Applications (125kHz)

The EM4200 is a low-frequency RFID chip operating at 125kHz. It is suitable for short-range reading applications such as access control, attendance systems, and pet identification.

2. Read-Only Requirements

The EM4200 is a read-only (RO) card, with a factory-programmed ID that cannot be modified. If your system only needs to read a unique ID for identification purposes, this card is a good fit.

3. Compatibility with EM4100/EM4102 Systems

As an upgrade to the EM4100, the EM4200 is fully backward-compatible with EM4100 and EM4102. If your devices support these protocols, the EM4200 can be used directly.

4. Cost-Sensitive Projects

The EM4200 is low-cost and highly stable, making it ideal for large-scale deployments where cost control is important.

5. No Need for Encryption or Advanced Security Features

If your project does not require data encryption or write capabilities, the EM4200 provides sufficient functionality.

Scenarios Where EM4200 Is Not Suitable:

1. Need for Read/Write Functionality

The EM4200 cannot store or write data; it only allows reading a fixed ID. If your application requires storing user data or status, consider alternatives like T5577 or MIFARE Classic.

2. High Security Requirements

The EM4200 lacks encryption and authentication features, making it vulnerable to cloning and not suitable for high-security environments.

3. Long-Range Identification

Low-frequency cards (125kHz) generally have a short read range (2–10 cm), which is not suitable for long-distance identification. For such applications, consider using UHF (860–960MHz) RFID cards.

4. Need for Large Storage Capacity

The EM4200 does not have a data storage area and only contains a unique ID, making it unsuitable for applications that require storing additional information.

Application Scenarios of the EM4200 RFID Card

The EM4200 card is a 125KHz low-frequency RFID read-only card known for its strong anti-interference capability, excellent penetration, and long-term durability. Its technical characteristics make it ideal for applications requiring stability and reliable identification. Below are several common application scenarios:

1. Animal Identification (ISO 11785 FDX-B)

EM4200 chips can be embedded in animal ear tags, collars, or under the skin, complying with the ISO 11785 FDX-B standard. This enables reliable tracking of livestock, pets, and wildlife for purposes such as health monitoring, vaccination records, and movement tracking. It’s widely used in farming, veterinary care, and conservation.

2.️ Smart Waste Management (BDE Standard)

By attaching EM4200 tags to waste bins or recycling containers, municipalities or waste service providers can track collection and disposal processes. This is especially useful in systems compliant with the German BDE (Waste Data Exchange) standard, helping improve efficiency, transparency, and environmental reporting.

3. Access Control & Identification

EM4200 cards are widely used in access control systems for residential complexes, office buildings, factories, and schools. Paired with RFID readers, they allow quick and secure identity verification. The card’s durability ensures reliable performance even under frequent use.

4. Logistics & Warehouse Automation

When attached to goods, pallets, or containers, EM4200 cards help track items throughout storage, shipping, and distribution. This improves inventory accuracy, reduces manual entry errors, and accelerates logistics operations.

5. Anti-Counterfeiting & Product Verification

Manufacturers can integrate EM4200 chips into product packaging or labels to enable authentication by retailers or consumers. Common in luxury goods, electronics, and pharmaceuticals, this application helps combat counterfeiting and enhances brand trust.

6. Industrial Equipment Management

EM4200 cards can be embedded in machinery or tools to record usage history, maintenance logs, and operational status. This allows for real-time monitoring and predictive maintenance, reducing downtime and improving equipment lifecycle management.

7. Parking System Integration

Used in parking lots of residential areas, shopping centers, and office buildings, EM4200 cards allow vehicles to be identified automatically for gate access, improving traffic flow and management efficiency.

8. Library and Membership Management

EM4200 RFID cards can function as library cards, visitor passes, or membership IDs. They facilitate identity verification and streamline the management of borrowing, access rights, and user behavior analytics.

How to Maintain the EM4200 RFID Card?

EM4200 RFID cards are relatively simple because they are passive, battery-free, read-only low-frequency RFID cards. They have a sturdy structure, long lifespan, and are not easily damaged. However, to ensure their long-term stable use, it is recommended to maintain and manage them from the following aspects:

Keep the surface clean

Use a soft cloth to wipe the card surface, avoiding dust and oil buildup that could affect the reader’s recognition. Avoid using corrosive cleaning agents such as alcohol or gasoline, as they may damage the card’s encapsulation layer.

Avoid extreme environments

Temperature: Avoid long-term storage in high temperatures (e.g., above 60°C) or low temperatures (e.g., below -20°C).

Humidity: Avoid prolonged exposure to humid or water-immersed environments. Although the card itself has some waterproof capability, cards without special waterproof encapsulation may be damaged by long-term moisture exposure.

Prevent mechanical damage

Do not bend, strike, or pierce the card. Avoid friction with sharp objects to prevent wear on the antenna or chip encapsulation. It is advisable to use card sleeves, lanyards, or keychains to protect the card, especially in environments such as construction sites or factories.

Keep away from strong magnetic fields and electromagnetic interference

Avoid prolonged exposure to strong electromagnetic fields (such as high-power transformers or welding equipment) to prevent recognition issues or damage to the internal coil.

Regularly check recognition status

Use a card reader periodically to test whether the card can be properly recognized, especially for cards used frequently in environments like access control or attendance systems. If unstable reading or failure occurs, it is recommended to replace the card to ensure stable system operation.

Match the encapsulation type to the usage environment

For use in special environments (such as underwater, high temperature, industrial sites), it is recommended to choose more robust protective card forms such as epoxy resin encapsulation, ABS shell, or silicone wristbands. For applications like pet or livestock identification, use injection-molded glass tube encapsulated EM4200 chips.

Conclusion

The EM4200 card, with its outstanding performance and broad compatibility, has become the preferred choice across various industries for low-frequency RFID solutions. It not only meets the needs of everyday applications such as access control, animal identification, and asset tracking but is also suitable for customized packaging and mass production.

If you are looking for a 125KHz RFID card that is stable, highly compatible, and cost-effective, the EM4200 is undoubtedly an ideal choice. With 28 years of extensive experience, CBT specializes in custom manufacturing of RFID cards and welcomes you to contact our experts anytime for tailored solutions to your projects!

All Rights Reserved: https://www.chipbond.com/article_em4200-rfid-card.html

Copyright Notice: This article is an original (translated) work by CBT. Please credit CBT as the source. If there are any concerns regarding copyright, please contact us directly.